CVE-2023-24833

Description

A use-after-free in BigIntPrimitive addition in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by an attacker to leak raw data from Hermes VM’s heap. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.20%
Vendor Advisory facebook.com
Affected: Facebook Hermes
Published at:
Updated at:

References

Link Tags
https://www.facebook.com/security/advisories/cve-2023-24833 patch vendor advisory
https://github.com/facebook/hermes/commit/a6dcafe6ded8e61658b40f5699878cd19a481f80 patch

Frequently Asked Questions

What is the severity of CVE-2023-24833?
CVE-2023-24833 has been scored as a high severity vulnerability.
How to fix CVE-2023-24833?
To fix CVE-2023-24833, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-24833 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-24833 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-24833?
CVE-2023-24833 affects Facebook Hermes.
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